Well as of the outline, Piccolo will be the only character that will be extremely underbalanced. Not only is he not a fast character nor a great asset on the health side but his only move that makes players want to play him will be downgraded severly. Piccolo in the show was able to hold his own against most of the character (Pre Cell Saga) and was speedy as well. Piccolo was also able to regenerate limbs and would thus leave to believe that he would have some incredible health assets. Lastly, Piccolo's SBC is his only strongpoint in the game, and for the next version, it will be attached and therefore won't have its appeal and leave Piccolo in a great defficit. If he was given a bigger boost on his transformation and a larger health upgrade, maybe simmiliar to Frieza's then he won't be as bad off.